mirror of
https://github.com/MariaDB/server.git
synced 2025-07-27 18:02:13 +03:00
MDEV-7487 Semi-join optimization for single-table update/delete statements
This patch allows to use semi-join optimization at the top level of
single-table update and delete statements.
The problem of supporting such optimization became easy to resolve after
processing a single-table update/delete statement started using JOIN
structure. This allowed to use JOIN::prepare() not only for multi-table
updates/deletes but for single-table ones as well. This was done in the
patch for mdev-28883:
Re-design the upper level of handling UPDATE and DELETE statements.
Note that JOIN::prepare() detects all subqueries that can be considered
as candidates for semi-join optimization. The code added by this patch
looks for such candidates at the top level and if such candidates are found
in the processed single-table update/delete the statement is handled in
the same way as a multi-table update/delete.
Approved by Oleksandr Byelkin <sanja@mariadb.com>
This commit is contained in:
Igor Babaev
551
mysql-test/main/update_single_to_multi.test
Normal file
551
mysql-test/main/update_single_to_multi.test
Normal file
@ -0,0 +1,551 @@
|
||||
--disable_warnings
|
||||
DROP DATABASE IF EXISTS dbt3_s001;
|
||||
--enable_warnings
|
||||
|
||||
CREATE DATABASE dbt3_s001;
|
||||
|
||||
use dbt3_s001;
|
||||
|
||||
--disable_query_log
|
||||
--disable_result_log
|
||||
--disable_warnings
|
||||
--source include/dbt3_s001.inc
|
||||
--enable_warnings
|
||||
--enable_result_log
|
||||
--enable_query_log
|
||||
|
||||
create index i_n_name on nation(n_name);
|
||||
analyze table nation;
|
||||
|
||||
|
||||
--echo # Pullout
|
||||
--echo # =======
|
||||
|
||||
let $c1=
|
||||
o_orderDATE between '1992-01-01' and '1992-06-30' and
|
||||
o_custkey in (select c_custkey from customer
|
||||
where c_nationkey in (select n_nationkey from nation
|
||||
where n_name='PERU'));
|
||||
|
||||
eval
|
||||
explain
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
eval
|
||||
explain format=json
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
|
||||
eval
|
||||
explain
|
||||
update orders set o_totalprice = o_totalprice-50 where $c1;
|
||||
eval
|
||||
explain format=json
|
||||
update orders set o_totalprice = o_totalprice-50 where $c1;
|
||||
eval
|
||||
update orders set o_totalprice = o_totalprice-50 where $c1;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
|
||||
eval
|
||||
update orders set o_totalprice= o_totalprice+50 where $c1;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
|
||||
|
||||
let $c2=
|
||||
(ps_partkey, ps_suppkey) in
|
||||
(select p_partkey, s_suppkey from part, supplier
|
||||
where p_retailprice between 901 and 910 and
|
||||
s_nationkey in (select n_nationkey from nation
|
||||
where n_name='PERU'));
|
||||
|
||||
eval
|
||||
explain
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
|
||||
eval
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
|
||||
|
||||
eval
|
||||
explain
|
||||
update partsupp set ps_supplycost = ps_supplycost+2 where $c2;
|
||||
eval
|
||||
update partsupp set ps_supplycost = ps_supplycost+2 where $c2;
|
||||
eval
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
|
||||
|
||||
eval
|
||||
update partsupp set ps_supplycost = ps_supplycost-2 where $c2;
|
||||
eval
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c2;
|
||||
|
||||
|
||||
let $c3=
|
||||
ps_partkey in (select p_partkey from part
|
||||
where p_retailprice between 901 and 910) and
|
||||
ps_suppkey in (select s_suppkey from supplier
|
||||
where s_nationkey in (select n_nationkey from nation
|
||||
where n_name='PERU'));
|
||||
eval
|
||||
explain
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
|
||||
eval
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
|
||||
|
||||
eval
|
||||
explain
|
||||
update partsupp set ps_supplycost = ps_supplycost+10 where $c3;
|
||||
eval
|
||||
update partsupp set ps_supplycost = ps_supplycost+10 where $c3;
|
||||
eval
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
|
||||
|
||||
eval
|
||||
update partsupp set ps_supplycost = ps_supplycost-10 where $c3;
|
||||
eval
|
||||
select ps_partkey, ps_suppkey, ps_supplycost from partsupp where $c3;
|
||||
|
||||
|
||||
let $c4=
|
||||
l_orderkey in (select o_orderkey from orders
|
||||
where o_custkey in
|
||||
(select c_custkey from customer
|
||||
where c_nationkey in
|
||||
(select n_nationkey from nation
|
||||
where n_name='PERU'))
|
||||
and
|
||||
o_orderDATE between '1992-06-30' and '1992-12-31')
|
||||
and
|
||||
(l_partkey, l_suppkey) in
|
||||
(select p_partkey, s_suppkey from part, supplier
|
||||
where p_retailprice between 901 and 1000 and
|
||||
s_nationkey in (select n_nationkey from nation
|
||||
where n_name='PERU'));
|
||||
|
||||
eval
|
||||
explain
|
||||
select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
|
||||
eval
|
||||
select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
|
||||
|
||||
eval
|
||||
explain
|
||||
update lineitem set l_tax = (l_tax*100+1)/100 where $c4;
|
||||
eval
|
||||
update lineitem set l_tax = (l_tax*100+1)/100 where $c4;
|
||||
eval
|
||||
select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
|
||||
|
||||
eval
|
||||
update lineitem set l_tax = (l_tax*100-1)/100 where $c4;
|
||||
eval
|
||||
select l_orderkey, l_linenumber, l_tax from lineitem where $c4;
|
||||
|
||||
|
||||
--echo # FirstMatch
|
||||
--echo # ==========
|
||||
|
||||
set optimizer_switch='materialization=off';
|
||||
|
||||
let $c5=
|
||||
c_nationkey in (select n_nationkey from nation
|
||||
where n_regionkey in (1,2))
|
||||
and
|
||||
c_custkey in (select o_custkey from orders
|
||||
where o_orderDATE between '1992-10-09' and '1993-06-08');
|
||||
|
||||
eval
|
||||
explain
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
eval
|
||||
explain format=json
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
|
||||
eval
|
||||
explain
|
||||
update customer set c_acctbal = c_acctbal+10 where $c5;
|
||||
eval
|
||||
explain format=json
|
||||
update customer set c_acctbal = c_acctbal+10 where $c5;
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal+10 where $c5;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal-10 where $c5;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
|
||||
set optimizer_switch='materialization=default';
|
||||
|
||||
let $c6=
|
||||
c_nationkey in (select n_nationkey from nation where n_name='PERU')
|
||||
and
|
||||
c_custkey in (select o_custkey from orders
|
||||
where o_orderDATE between "1992-01-09" and "1993-01-08");
|
||||
|
||||
eval
|
||||
explain
|
||||
select c_name, c_acctbal from customer where $c6;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c6;
|
||||
|
||||
eval
|
||||
explain
|
||||
update customer set c_acctbal = c_acctbal+20 where $c6;
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal+20 where $c6;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c6;
|
||||
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal-20 where $c6;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c6;
|
||||
|
||||
--echo # Materialization
|
||||
--echo # ===============
|
||||
|
||||
let $c7=
|
||||
c_custkey in (select o_custkey from orders
|
||||
where o_orderDATE between '1992-01-09' and '1992-03-08');
|
||||
|
||||
eval
|
||||
explain
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
eval
|
||||
explain format=json
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
|
||||
eval
|
||||
explain
|
||||
update customer set c_acctbal = c_acctbal+5 where $c7;
|
||||
eval
|
||||
explain format=json
|
||||
update customer set c_acctbal = c_acctbal+5 where $c7;
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal+5 where $c7;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal-5 where $c7;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
|
||||
|
||||
let $c8=
|
||||
c_custkey in (select o_custkey from orders
|
||||
where o_orderDATE between '1992-06-09' and '1993-01-08');
|
||||
|
||||
eval
|
||||
explain
|
||||
select c_name, c_acctbal from customer where $c8;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c8;
|
||||
|
||||
eval
|
||||
explain
|
||||
update customer set c_acctbal = c_acctbal+1 where $c8;
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal+1 where $c8;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c8;
|
||||
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal-1 where $c8;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c8;
|
||||
|
||||
|
||||
--echo # Materialization SJM
|
||||
--echo # ===================
|
||||
|
||||
let $c9=
|
||||
c_custkey in (select o_custkey from orders
|
||||
where o_orderDATE between '1992-01-09' and '1992-03-08'
|
||||
group by o_custkey having count(o_custkey) > 1);
|
||||
|
||||
eval
|
||||
explain
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
eval
|
||||
explain format=json
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
|
||||
eval
|
||||
explain
|
||||
update customer set c_acctbal = c_acctbal-5 where $c9;
|
||||
eval
|
||||
explain format=json
|
||||
update customer set c_acctbal = c_acctbal-5 where $c9;
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal-5 where $c9;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal+5 where $c9;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
|
||||
|
||||
let $c10=
|
||||
c_custkey in (select o_custkey from orders
|
||||
where o_orderDATE between '1992-01-09' and '1993-03-08'
|
||||
group by o_custkey having count(o_custkey) > 5);
|
||||
|
||||
eval
|
||||
explain
|
||||
select c_name, c_acctbal from customer where $c10;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c10;
|
||||
|
||||
eval
|
||||
explain
|
||||
update customer set c_acctbal = c_acctbal-1 where $c10;
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal-1 where $c10;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c10;
|
||||
|
||||
eval
|
||||
update customer set c_acctbal = c_acctbal+1 where $c10;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c10;
|
||||
|
||||
|
||||
--echo # Pullout PS
|
||||
--echo # ==========
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
update orders set o_totalprice = o_totalprice+? where $c1;
|
||||
";
|
||||
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
set @a1=-20;
|
||||
execute stmt using @a1;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
set @a2=-10;
|
||||
execute stmt using @a2;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
execute stmt using -(@a1+@a2);
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # FirstMatch PS
|
||||
--echo # =============
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
update customer set c_acctbal = c_acctbal+? where $c5;
|
||||
";
|
||||
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
set @a1=15;
|
||||
execute stmt using @a1;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
set @a2=5;
|
||||
execute stmt using @a2;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
execute stmt using -(@a1+@a2);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # Materialization PS
|
||||
--echo # ==================
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
update customer set c_acctbal = c_acctbal+? where $c7;
|
||||
";
|
||||
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
set @a1=7;
|
||||
execute stmt using @a1;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
set @a2=3;
|
||||
execute stmt using @a2;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
execute stmt using -(@a1+@a2);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # Materialization SJM PS
|
||||
--echo # ======================
|
||||
|
||||
eval
|
||||
prepare stmt from "
|
||||
update customer set c_acctbal = c_acctbal+? where $c9;
|
||||
";
|
||||
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
set @a1=-2;
|
||||
execute stmt using @a1;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
set @a2=-1;
|
||||
execute stmt using @a2;
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
execute stmt using -(@a1+@a2);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
|
||||
deallocate prepare stmt;
|
||||
|
||||
|
||||
--echo # Pullout SP
|
||||
--echo # ==========
|
||||
|
||||
eval
|
||||
create procedure p(d int)
|
||||
update orders set o_totalprice = o_totalprice+d where $c1;
|
||||
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
call p(-10);
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
call p(-20);
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
call p(10+20);
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c1;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
|
||||
--echo # FirstMatch SP
|
||||
--echo # =============
|
||||
|
||||
eval
|
||||
create procedure p(d int)
|
||||
update customer set c_acctbal = c_acctbal+d where $c5;
|
||||
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
call p(5);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
call p(15);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
call p(-(5+15));
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c5;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
|
||||
--echo # Materialization SP
|
||||
--echo # ==================
|
||||
|
||||
eval
|
||||
create procedure p(d int)
|
||||
update customer set c_acctbal = c_acctbal+d where $c7;
|
||||
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
call p(3);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
call p(7);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
call p(-(3+7));
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c7;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
|
||||
--echo # Materialization SJM SP
|
||||
--echo # ======================
|
||||
|
||||
eval
|
||||
create procedure p(d int)
|
||||
update customer set c_acctbal = c_acctbal+d where $c9;
|
||||
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
call p(-1);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
call p(-2);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
call p(1+2);
|
||||
eval
|
||||
select c_name, c_acctbal from customer where $c9;
|
||||
|
||||
drop procedure p;
|
||||
|
||||
--echo # Checking limitations
|
||||
--echo # ====================
|
||||
|
||||
let $c11=
|
||||
o_orderDATE between '1992-01-01' and '1992-06-30' and
|
||||
o_custkey in (select c_custkey from customer
|
||||
where c_nationkey in (1,2));
|
||||
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
--echo # Should not use semi-join conversion because has ORDER BY ... LIMIT
|
||||
eval
|
||||
explain
|
||||
update orders set o_totalprice = o_totalprice-50 where $c11
|
||||
order by o_totalprice limit 500;
|
||||
eval
|
||||
update orders set o_totalprice = o_totalprice-50 where $c11
|
||||
order by o_totalprice limit 500;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
eval
|
||||
update orders set o_totalprice = o_totalprice+50 where $c11
|
||||
order by o_totalprice limit 500;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
|
||||
--echo # Should use semi-join converion
|
||||
eval
|
||||
explain
|
||||
update orders set o_totalprice = o_totalprice-50 where $c11;
|
||||
eval
|
||||
update orders set o_totalprice = o_totalprice-50 where $c11;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
eval
|
||||
update orders set o_totalprice = o_totalprice+50 where $c11;
|
||||
eval
|
||||
select o_orderkey, o_totalprice from orders where $c11;
|
||||
|
||||
DROP DATABASE dbt3_s001;
|
||||
Reference in New Issue
Block a user